TM 9-4120-402-14
5-30. EXPANSION VALVE. - continued
(5)
Remove any insulation from connections and debraze three connections from tubing. (See paragraph
(6)
Remove expansion valve (6) from unit.
(7)
Position tubing on expansion valve (6) connections.
(8)
Protect valve (6) during brazing operations. Direct flame away from valve body and wrap valve body
with wet rags.
(9)
Braze tubing to connections. (See paragraph 5-13.)
(10) Install clamp (5) onto expansion valve (6) and secure to mounting bracket with screw (1), flat washer
(2), lock washer (3), and nut (4).
(11) Position sensing bulb as noted during removal and secure to suction return line with clamps and
hardware. Be sure sensing bulb is making good metal-to-metal contact.
(12) Replace refrigerant desiccant dehydrator. (See paragraph 5-21.)
(13) Rewrap insulation at expansion valve joints and sensing bulb.
(14) Carefully coil sensing bulb capillary line in unit and tape to prevent vibration.
NOTE
FOLLOW-ON MAINTENANCE:
Install rear panel (para 4-22).
5-75
